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A study on the reduction of concrete lining re-bar according to the tunnel design factors

터널 설계인자 평가에 따른 콘크리트 라이닝 철근량 절감에 관한 연구

  • Received : 2017.12.13
  • Accepted : 2018.01.09
  • Published : 2018.01.31

Abstract

This paper presents a study on the reduction of concrete lining re-bar according to the tunnel design factors. The design of the concrete lining increases the reinforcing re-bar according to the application of excessive load, and the economical efficiency is reduced. In order to improve the economical efficiency of tunnel construction, rational standards are required for the design factors of concrete lining. Therefore, this research analyzed the characteristics and problems of the design factors applied to the design of concrete lining. Also, the economical review of the concrete lining for design factor application was compared with the amount of reinforcing re-bar calculated from the section design using numerical analysis. The results show that the amount of re-bar is varied according to the design factors. That is, the required amount for re-bar in the tunnel concrete lining could be reduced in the design stage. The results of this study may be useful for economic design of concrete lining in the future.

Acknowledgement

Grant : 도심지 소단면(

Supported by : 국토교통과학기술진흥원

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